FA-017 / Concurrency / Member archive
Stale snapshots erase a counter increment · case 02
Two updates calculated from the same snapshot leave only one increment.
Case scope
Two updates calculated from the same snapshot leave only one increment.
Why this case matters
A compact reasoning and repair task with executable evidence.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| two independent updates | 4 | 6 | Failed |
MEMBER ARCHIVE
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